ul-ss

if i do the stage 2.5 PRC 5.3 heads with the ms3 cam and a fast intake would i need to do the injectors as well?
also which intake would i want?
would the 92mm fast be good?
with the fast throttle body to match?

thanks for the help

HCI2000SS

iTrader: (2)

I would step up the injectors personally. If you can swing a FAST 102 then i'd do it, and if not a 92 with matching TB

ul-ss

is the 102 a big gain over the 92? do the fast 36lb injectors sound fine or is there some others that you would recommend?

JakeFusion

iTrader: (7)

102 is probably 5-7HP across the RPM range. The only difference in price is the fuel rails. If you're spending that much, might as well maximize.

And I'd get TSP to grind you a custom variant of the MS3 on LSL/LXL lobes - still 237/242, but with more modern lobes. I'd also do it with some advance built in. 112+2 if it'll clear the heads.

ul-ss

sounds good ill ask them about the new lobes. btw any specific clutch recommended

garygnu

get a bigger fuel pump and a 92mm TB.buy the cam kit ,and do comp cam trunnion bearings also.look at a 98mm maf sensor.

JakeFusion

iTrader: (7)

I agree. You could probably hold off on the MAF, but an upgraded fuel pump with a hotwire kit is good money to spend. And the 92mm TB works well with the FAST 102, especially the FAST TB. It doesn't leave a gap and is a little easier to tune without giving up any power. And is easier to install. The 102 TBs require grinding the water pump or replacing it with an LS2 pump in order to fit.

ul-ss

are you talking about something like this?

https://texas-speed.com/p-2356-racet...ic-system.aspx

ul-ss

also should i worry about lifters or head studs?

JakeFusion

iTrader: (7)

Yup that kit will work. Just make sure you get the 99-02 kit since the 98s have a different gas tank.

How many miles on the car? If you're over 75k miles, I'd do lifters. The problem is, I don't have a good recommendation. The LS7s, I believe, aren't adequate for heavy valves and high spring pressures. There isn't anything that looks like a suitable alternative until you get into the high dollar Morels.

I'd do ARP Head Bolts. If you don't plan to take your heads off a lot, the bolts are all you need. And getting away from GM TTY bolts is always a good thing.

ul-ss

sweet ill add that pump to the list. i have around 71,000 on it so probably do them? i can ask the guys at tsp what they think on the lifters, what about the trunnion sleeves mentioned above for the stock lifters? sounds good on the bolts only save a little $$. any recommendations on the clutch?

JakeFusion

iTrader: (7)

Trunion upgrade = yes.

Brian Tooley has his SLR lifters for $199. Haven't seen them to know if they are a real upgrade. Might be worth a look.

Clutch. I'd probably just do a Monster Stage 2.

ul-ss

could i do the trunnion upgrade instead of new lifters or are those different?

JakeFusion

iTrader: (7)

Different. The trunion just adds some protection to the stock rockers. You don't want the trunion to fail and spill needle bearings everywhere. The Comp kit includes a better mechanism to hold the needle bearings. The alternative is the CHE bushing kit, but it's $450, but has a solid copper bushing. Probably overkill for you.

The lifter is what rides on the camshaft. The pushrods sit in the lifter cup and that presses up on the rocker, which then pivots on the trunion and depresses the spring, opening the valve. All of those upgrades are for reliability with the more aggressive camshaft and springs.

PREDATOR-Z

Trunnion upgrade is on the rockers.

ul-ss

thanks for clearing that up for me, ill add the trunion kit to the list for sure, so it looks like to do it right around $5k without dyno, sound right?

also would i want gears? my cars a weekend driver and i mess around town sometimes but i dont want it falling on its face every time i take off

JakeFusion

iTrader: (7)

With an MS3? 4.10s.

LS1T56FTW

iTrader: (3)

With that cam I wouldn't go any longer than 4.30s. Should be revving that setup to at least 7000, even with stock tire size he won't run out of 4th in the 1/4. I have 4.10s on my 228/232 cam setup and they work well, but my peak power was below 6600 - with that cam it will probably peak closer to 68-6900 depending on the intake.

JakeFusion

iTrader: (7)

If he orders it on a 112+2 with the LSL/LXL lobe, the 4.10s will suffice. Still the IVC is pretty damn late at 48.5 degrees even at a 110 ICL.

RealArmyMan

iTrader: (2)

I've got that H/C package on my '02 SS(on 112LSA). I didn't have a problem with the LS7 lifters at all. Granted, that was before the 4L60E burnt up lol. But, that's being swapped with a stage 2 TDP built T56. Definitely go with a dyno tune. My advice is to steer way clear of the TSP mail-order tune. I paid for one, and what they gave me, absolutely sucked. Car bogged like crazy and was hard as hell to keep running. There's a video of it idling up on youtube, just search for my username on there. Oh, and pay no mind to the barefoot man(me) and the broken exhaust hanger. You'll see that after I rev it, the car basically wants to die.

Oh, and ya, I also went with F.A.S.T. 55# injectors and an upgraded in tank pump. I think it was....255lph.